Time and Chance — Sharon Kay Penman

It was medieval England's immortal marriage--Eleanor of Aquitaine and Henry II, bound by passion and ambition, certain to leave a legacy of greatness. But while lust would divide them, it was friendship--and ultimately faith--that brought bloodshed into their midst. It began with Thomas Becket, Henry's closest confidant, and his elevation to be Archbishop of Canterbury. It ended with a perceived betrayal that made a royal murder seem inevitable. Along the way were enough scheming, seductions, and scandals to topple any kingdom but their own. . . .